Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add dkmqflx/nestjs-best-practices-plugin --skill nestjs-performance-logginggit clone --depth 1 https://github.com/dkmqflx/nestjs-best-practices-pluginWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/dkmqflx/nestjs-best-practices-plugin/nestjs-performance-logging)<a href="https://agentmods.dev/skills/dkmqflx/nestjs-best-practices-plugin/nestjs-performance-logging"><img src="https://agentmods.dev/badge/skills/dkmqflx/nestjs-best-practices-plugin/nestjs-performance-logging/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/dkmqflx/nestjs-best-practices-plugin/nestjs-performance-logging"><img src="https://agentmods.dev/badge/skills/dkmqflx/nestjs-best-practices-plugin/nestjs-performance-logging.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00060 | $0.00447 |
| Opus 5 | $0.00030 | $0.00224 |
| Sonnet 5 | $0.00012 | $0.00089 |
| Haiku 4.5 | $0.00006 | $0.00045 |
Grade A, and why
nestjs-performance-logging scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 9d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
NestJS Performance & Logging
Practical rules for squeezing throughput out of a NestJS app and making it observable in production: structured logs, correlation IDs, health checks, and clean shutdown.
When to Apply
- Optimizing request throughput or latency of a NestJS HTTP service
- Replacing
console.logwith production-grade structured logging - Running in Kubernetes/ECS where readiness/liveness probes and graceful drain matter
- Tracing requests across services or debugging incidents from logs
- Hardening logs so secrets, tokens, and PII never leak
Rules
fastify-adapter-for-throughput- Prefer FastifyAdapter over Express for higher throughput.enable-compression- Gzip response payloads to cut bandwidth and latency.structured-json-logging- Use nestjs-pino for structured JSON logs instead of console.log.avoid-request-scoped-providers- REQUEST scope re-instantiates per request; keep singletons.graceful-shutdown-hooks- enableShutdownHooks + OnModuleDestroy to drain cleanly.health-checks-terminus- Expose @nestjs/terminus health/readiness endpoints for orchestrators.correlation-ids- Propagate a request/correlation ID through every log line.dont-log-sensitive-data- Redact secrets, tokens, and PII from logs.
How to Use
Load this skill when working on NestJS performance or observability. Skim the Rules index, open the relevant rules/<name>.md for the why plus an incorrect/correct code pair, and apply the pattern. Rules are tagged by impact (CRITICAL/HIGH/MEDIUM/LOW) so you can prioritize.
What ships with it
8 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- rules/avoid-request-scoped-providers.md 1021 B
- rules/correlation-ids.md 914 B
- rules/dont-log-sensitive-data.md 930 B
- rules/enable-compression.md 950 B
- rules/fastify-adapter-for-throughput.md 1.0 KB
- rules/graceful-shutdown-hooks.md 1000 B
- rules/health-checks-terminus.md 1.0 KB
- rules/structured-json-logging.md 1.1 KB
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 9d ago First seen · 36 lines · 60 tokens per session scan A 42e23094133c
nestjs-performance-logging is a skill published in the GitHub repository dkmqflx/nestjs-best-practices-plugin (1 stars, last pushed 2mo ago), licensed MIT. It adds 60 tokens to every session and 447 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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